V(Atomic number : 23)

1. Introduce – Relatively soft and ductile in pure state, but becomes stronger and brittle when impurities are added – Element itself is highly reactive and exists only as a compound in nature – Due to the oxide passivation protective film, it is not easily corroded at room temperature and is stable in strong acidic atmospheres such as alkali, sulfuric acid, hydrochloric acid, etc. – Adding small amounts of V to steel improves the steel’s strength and high temperature properties – V alloying element influence: improve strength, high temperature properties 2....